Make data actually representative of what the client will get

src/types/client_data.d.ts

@@ -12,15 +12,15 @@ interface HostInformation extends response {
 // Event is only emitted when the JoinGame event is successful, so there is no
 // success indicator in this response
 interface NewPlayer {
-	player: string;
+	player?: string;
 }
 
 interface GameJoined extends response {
 	// properties depend on `success` being `true`
-	players: string[];
+	players?: string[];
 }
 
 interface PlayerListResponse extends response {
 	// properties depend on `success` being `true`
-	players: string[]
+	players?: string[]
 }